1883 lines
51 KiB
C
1883 lines
51 KiB
C
/*
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* Linux host USB redirector
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Copyright (c) 2008 Max Krasnyansky
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* Support for host device auto connect & disconnect
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* Major rewrite to support fully async operation
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*
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* Copyright 2008 TJ <linux@tjworld.net>
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* Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
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* to the legacy /proc/bus/usb USB device discovery and handling
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h"
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#include "qemu-timer.h"
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#include "monitor.h"
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#include "sysemu.h"
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#include <dirent.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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#include <linux/version.h>
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#include "hw/usb.h"
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/* We redefine it to avoid version problems */
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struct usb_ctrltransfer {
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uint8_t bRequestType;
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uint8_t bRequest;
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uint16_t wValue;
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uint16_t wIndex;
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uint16_t wLength;
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uint32_t timeout;
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void *data;
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};
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typedef int USBScanFunc(void *opaque, int bus_num, int addr, char *port,
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int class_id, int vendor_id, int product_id,
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const char *product_name, int speed);
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//#define DEBUG
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#ifdef DEBUG
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#define DPRINTF printf
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#else
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#define DPRINTF(...)
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#endif
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#define USBDBG_DEVOPENED "husb: opened %s/devices\n"
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#define USBPROCBUS_PATH "/proc/bus/usb"
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#define PRODUCT_NAME_SZ 32
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#define MAX_ENDPOINTS 15
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#define MAX_PORTLEN 16
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#define USBDEVBUS_PATH "/dev/bus/usb"
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#define USBSYSBUS_PATH "/sys/bus/usb"
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static char *usb_host_device_path;
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#define USB_FS_NONE 0
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#define USB_FS_PROC 1
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#define USB_FS_DEV 2
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#define USB_FS_SYS 3
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static int usb_fs_type;
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/* endpoint association data */
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#define ISO_FRAME_DESC_PER_URB 32
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#define ISO_URB_COUNT 3
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#define INVALID_EP_TYPE 255
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/* devio.c limits single requests to 16k */
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#define MAX_USBFS_BUFFER_SIZE 16384
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typedef struct AsyncURB AsyncURB;
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struct endp_data {
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uint8_t type;
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uint8_t halted;
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uint8_t iso_started;
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AsyncURB *iso_urb;
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int iso_urb_idx;
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int iso_buffer_used;
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int max_packet_size;
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};
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struct USBAutoFilter {
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uint32_t bus_num;
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uint32_t addr;
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char *port;
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uint32_t vendor_id;
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uint32_t product_id;
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};
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typedef struct USBHostDevice {
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USBDevice dev;
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int fd;
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uint8_t descr[1024];
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int descr_len;
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int configuration;
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int ninterfaces;
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int closing;
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Notifier exit;
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struct endp_data endp_table[MAX_ENDPOINTS];
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QLIST_HEAD(, AsyncURB) aurbs;
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/* Host side address */
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int bus_num;
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int addr;
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char port[MAX_PORTLEN];
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struct USBAutoFilter match;
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QTAILQ_ENTRY(USBHostDevice) next;
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} USBHostDevice;
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static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
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static int usb_host_close(USBHostDevice *dev);
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static int parse_filter(const char *spec, struct USBAutoFilter *f);
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static void usb_host_auto_check(void *unused);
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static int usb_host_read_file(char *line, size_t line_size,
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const char *device_file, const char *device_name);
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static int is_isoc(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
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}
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static int is_valid(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].type != INVALID_EP_TYPE;
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}
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static int is_halted(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].halted;
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}
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static void clear_halt(USBHostDevice *s, int ep)
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{
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s->endp_table[ep - 1].halted = 0;
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}
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static void set_halt(USBHostDevice *s, int ep)
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{
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s->endp_table[ep - 1].halted = 1;
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}
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static int is_iso_started(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].iso_started;
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}
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static void clear_iso_started(USBHostDevice *s, int ep)
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{
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s->endp_table[ep - 1].iso_started = 0;
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}
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static void set_iso_started(USBHostDevice *s, int ep)
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{
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s->endp_table[ep - 1].iso_started = 1;
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}
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static void set_iso_urb(USBHostDevice *s, int ep, AsyncURB *iso_urb)
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{
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s->endp_table[ep - 1].iso_urb = iso_urb;
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}
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static AsyncURB *get_iso_urb(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].iso_urb;
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}
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static void set_iso_urb_idx(USBHostDevice *s, int ep, int i)
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{
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s->endp_table[ep - 1].iso_urb_idx = i;
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}
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static int get_iso_urb_idx(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].iso_urb_idx;
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}
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static void set_iso_buffer_used(USBHostDevice *s, int ep, int i)
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{
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s->endp_table[ep - 1].iso_buffer_used = i;
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}
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static int get_iso_buffer_used(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].iso_buffer_used;
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}
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static void set_max_packet_size(USBHostDevice *s, int ep, uint8_t *descriptor)
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{
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int raw = descriptor[4] + (descriptor[5] << 8);
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int size, microframes;
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size = raw & 0x7ff;
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switch ((raw >> 11) & 3) {
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case 1: microframes = 2; break;
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case 2: microframes = 3; break;
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default: microframes = 1; break;
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}
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DPRINTF("husb: max packet size: 0x%x -> %d x %d\n",
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raw, microframes, size);
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s->endp_table[ep - 1].max_packet_size = size * microframes;
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}
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static int get_max_packet_size(USBHostDevice *s, int ep)
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{
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return s->endp_table[ep - 1].max_packet_size;
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}
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/*
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* Async URB state.
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* We always allocate iso packet descriptors even for bulk transfers
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* to simplify allocation and casts.
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*/
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struct AsyncURB
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{
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struct usbdevfs_urb urb;
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struct usbdevfs_iso_packet_desc isocpd[ISO_FRAME_DESC_PER_URB];
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USBHostDevice *hdev;
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QLIST_ENTRY(AsyncURB) next;
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/* For regular async urbs */
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USBPacket *packet;
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int more; /* large transfer, more urbs follow */
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/* For buffered iso handling */
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int iso_frame_idx; /* -1 means in flight */
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};
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static AsyncURB *async_alloc(USBHostDevice *s)
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{
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AsyncURB *aurb = qemu_mallocz(sizeof(AsyncURB));
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aurb->hdev = s;
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QLIST_INSERT_HEAD(&s->aurbs, aurb, next);
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return aurb;
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}
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static void async_free(AsyncURB *aurb)
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{
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QLIST_REMOVE(aurb, next);
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qemu_free(aurb);
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}
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static void do_disconnect(USBHostDevice *s)
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{
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printf("husb: device %d.%d disconnected\n",
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s->bus_num, s->addr);
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usb_host_close(s);
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usb_host_auto_check(NULL);
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}
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static void async_complete(void *opaque)
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{
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USBHostDevice *s = opaque;
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AsyncURB *aurb;
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while (1) {
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USBPacket *p;
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int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
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if (r < 0) {
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if (errno == EAGAIN) {
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return;
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}
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if (errno == ENODEV && !s->closing) {
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do_disconnect(s);
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return;
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}
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DPRINTF("husb: async. reap urb failed errno %d\n", errno);
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return;
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}
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DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
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aurb, aurb->urb.status, aurb->urb.actual_length);
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/* If this is a buffered iso urb mark it as complete and don't do
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anything else (it is handled further in usb_host_handle_iso_data) */
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if (aurb->iso_frame_idx == -1) {
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if (aurb->urb.status == -EPIPE) {
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set_halt(s, aurb->urb.endpoint & 0xf);
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}
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aurb->iso_frame_idx = 0;
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continue;
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}
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p = aurb->packet;
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if (p) {
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switch (aurb->urb.status) {
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case 0:
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p->len += aurb->urb.actual_length;
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break;
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case -EPIPE:
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set_halt(s, p->devep);
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p->len = USB_RET_STALL;
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break;
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default:
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p->len = USB_RET_NAK;
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break;
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}
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if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
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usb_generic_async_ctrl_complete(&s->dev, p);
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} else if (!aurb->more) {
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usb_packet_complete(&s->dev, p);
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}
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}
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async_free(aurb);
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}
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}
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static void usb_host_async_cancel(USBDevice *dev, USBPacket *p)
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{
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USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
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AsyncURB *aurb;
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QLIST_FOREACH(aurb, &s->aurbs, next) {
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if (p != aurb->packet) {
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continue;
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}
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DPRINTF("husb: async cancel: packet %p, aurb %p\n", p, aurb);
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/* Mark it as dead (see async_complete above) */
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aurb->packet = NULL;
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int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
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if (r < 0) {
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DPRINTF("husb: async. discard urb failed errno %d\n", errno);
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}
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}
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}
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static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
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{
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const char *op = NULL;
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int dev_descr_len, config_descr_len;
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int interface, nb_interfaces;
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int ret, i;
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if (configuration == 0) /* address state - ignore */
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return 1;
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DPRINTF("husb: claiming interfaces. config %d\n", configuration);
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i = 0;
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dev_descr_len = dev->descr[0];
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if (dev_descr_len > dev->descr_len) {
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goto fail;
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}
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i += dev_descr_len;
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while (i < dev->descr_len) {
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DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
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i, dev->descr_len,
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dev->descr[i], dev->descr[i+1]);
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if (dev->descr[i+1] != USB_DT_CONFIG) {
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i += dev->descr[i];
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continue;
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}
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config_descr_len = dev->descr[i];
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printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
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if (configuration < 0 || configuration == dev->descr[i + 5]) {
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configuration = dev->descr[i + 5];
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break;
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}
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i += config_descr_len;
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}
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if (i >= dev->descr_len) {
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fprintf(stderr,
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"husb: update iface failed. no matching configuration\n");
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goto fail;
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}
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nb_interfaces = dev->descr[i + 4];
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|
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#ifdef USBDEVFS_DISCONNECT
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/* earlier Linux 2.4 do not support that */
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{
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struct usbdevfs_ioctl ctrl;
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for (interface = 0; interface < nb_interfaces; interface++) {
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ctrl.ioctl_code = USBDEVFS_DISCONNECT;
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ctrl.ifno = interface;
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ctrl.data = 0;
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op = "USBDEVFS_DISCONNECT";
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ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
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if (ret < 0 && errno != ENODATA) {
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goto fail;
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}
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}
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}
|
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#endif
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|
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/* XXX: only grab if all interfaces are free */
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for (interface = 0; interface < nb_interfaces; interface++) {
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op = "USBDEVFS_CLAIMINTERFACE";
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ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
|
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if (ret < 0) {
|
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if (errno == EBUSY) {
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printf("husb: update iface. device already grabbed\n");
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} else {
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perror("husb: failed to claim interface");
|
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}
|
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goto fail;
|
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}
|
|
}
|
|
|
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printf("husb: %d interfaces claimed for configuration %d\n",
|
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nb_interfaces, configuration);
|
|
|
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dev->ninterfaces = nb_interfaces;
|
|
dev->configuration = configuration;
|
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return 1;
|
|
|
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fail:
|
|
if (errno == ENODEV) {
|
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do_disconnect(dev);
|
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}
|
|
perror(op);
|
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return 0;
|
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}
|
|
|
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static int usb_host_release_interfaces(USBHostDevice *s)
|
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{
|
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int ret, i;
|
|
|
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DPRINTF("husb: releasing interfaces\n");
|
|
|
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for (i = 0; i < s->ninterfaces; i++) {
|
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ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
|
|
if (ret < 0) {
|
|
perror("husb: failed to release interface");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void usb_host_handle_reset(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
|
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DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
|
|
|
|
ioctl(s->fd, USBDEVFS_RESET);
|
|
|
|
usb_host_claim_interfaces(s, s->configuration);
|
|
}
|
|
|
|
static void usb_host_handle_destroy(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = (USBHostDevice *)dev;
|
|
|
|
usb_host_close(s);
|
|
QTAILQ_REMOVE(&hostdevs, s, next);
|
|
qemu_remove_exit_notifier(&s->exit);
|
|
}
|
|
|
|
static int usb_linux_update_endp_table(USBHostDevice *s);
|
|
|
|
/* iso data is special, we need to keep enough urbs in flight to make sure
|
|
that the controller never runs out of them, otherwise the device will
|
|
likely suffer a buffer underrun / overrun. */
|
|
static AsyncURB *usb_host_alloc_iso(USBHostDevice *s, uint8_t ep, int in)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, j, len = get_max_packet_size(s, ep);
|
|
|
|
aurb = qemu_mallocz(ISO_URB_COUNT * sizeof(*aurb));
|
|
for (i = 0; i < ISO_URB_COUNT; i++) {
|
|
aurb[i].urb.endpoint = ep;
|
|
aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len;
|
|
aurb[i].urb.buffer = qemu_malloc(aurb[i].urb.buffer_length);
|
|
aurb[i].urb.type = USBDEVFS_URB_TYPE_ISO;
|
|
aurb[i].urb.flags = USBDEVFS_URB_ISO_ASAP;
|
|
aurb[i].urb.number_of_packets = ISO_FRAME_DESC_PER_URB;
|
|
for (j = 0 ; j < ISO_FRAME_DESC_PER_URB; j++)
|
|
aurb[i].urb.iso_frame_desc[j].length = len;
|
|
if (in) {
|
|
aurb[i].urb.endpoint |= 0x80;
|
|
/* Mark as fully consumed (idle) */
|
|
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB;
|
|
}
|
|
}
|
|
set_iso_urb(s, ep, aurb);
|
|
|
|
return aurb;
|
|
}
|
|
|
|
static void usb_host_stop_n_free_iso(USBHostDevice *s, uint8_t ep)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, ret, killed = 0, free = 1;
|
|
|
|
aurb = get_iso_urb(s, ep);
|
|
if (!aurb) {
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < ISO_URB_COUNT; i++) {
|
|
/* in flight? */
|
|
if (aurb[i].iso_frame_idx == -1) {
|
|
ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]);
|
|
if (ret < 0) {
|
|
printf("husb: discard isoc in urb failed errno %d\n", errno);
|
|
free = 0;
|
|
continue;
|
|
}
|
|
killed++;
|
|
}
|
|
}
|
|
|
|
/* Make sure any urbs we've killed are reaped before we free them */
|
|
if (killed) {
|
|
async_complete(s);
|
|
}
|
|
|
|
for (i = 0; i < ISO_URB_COUNT; i++) {
|
|
qemu_free(aurb[i].urb.buffer);
|
|
}
|
|
|
|
if (free)
|
|
qemu_free(aurb);
|
|
else
|
|
printf("husb: leaking iso urbs because of discard failure\n");
|
|
set_iso_urb(s, ep, NULL);
|
|
set_iso_urb_idx(s, ep, 0);
|
|
clear_iso_started(s, ep);
|
|
}
|
|
|
|
static int urb_status_to_usb_ret(int status)
|
|
{
|
|
switch (status) {
|
|
case -EPIPE:
|
|
return USB_RET_STALL;
|
|
default:
|
|
return USB_RET_NAK;
|
|
}
|
|
}
|
|
|
|
static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in)
|
|
{
|
|
AsyncURB *aurb;
|
|
int i, j, ret, max_packet_size, offset, len = 0;
|
|
|
|
max_packet_size = get_max_packet_size(s, p->devep);
|
|
if (max_packet_size == 0)
|
|
return USB_RET_NAK;
|
|
|
|
aurb = get_iso_urb(s, p->devep);
|
|
if (!aurb) {
|
|
aurb = usb_host_alloc_iso(s, p->devep, in);
|
|
}
|
|
|
|
i = get_iso_urb_idx(s, p->devep);
|
|
j = aurb[i].iso_frame_idx;
|
|
if (j >= 0 && j < ISO_FRAME_DESC_PER_URB) {
|
|
if (in) {
|
|
/* Check urb status */
|
|
if (aurb[i].urb.status) {
|
|
len = urb_status_to_usb_ret(aurb[i].urb.status);
|
|
/* Move to the next urb */
|
|
aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB - 1;
|
|
/* Check frame status */
|
|
} else if (aurb[i].urb.iso_frame_desc[j].status) {
|
|
len = urb_status_to_usb_ret(
|
|
aurb[i].urb.iso_frame_desc[j].status);
|
|
/* Check the frame fits */
|
|
} else if (aurb[i].urb.iso_frame_desc[j].actual_length > p->len) {
|
|
printf("husb: received iso data is larger then packet\n");
|
|
len = USB_RET_NAK;
|
|
/* All good copy data over */
|
|
} else {
|
|
len = aurb[i].urb.iso_frame_desc[j].actual_length;
|
|
memcpy(p->data,
|
|
aurb[i].urb.buffer +
|
|
j * aurb[i].urb.iso_frame_desc[0].length,
|
|
len);
|
|
}
|
|
} else {
|
|
len = p->len;
|
|
offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->devep);
|
|
|
|
/* Check the frame fits */
|
|
if (len > max_packet_size) {
|
|
printf("husb: send iso data is larger then max packet size\n");
|
|
return USB_RET_NAK;
|
|
}
|
|
|
|
/* All good copy data over */
|
|
memcpy(aurb[i].urb.buffer + offset, p->data, len);
|
|
aurb[i].urb.iso_frame_desc[j].length = len;
|
|
offset += len;
|
|
set_iso_buffer_used(s, p->devep, offset);
|
|
|
|
/* Start the stream once we have buffered enough data */
|
|
if (!is_iso_started(s, p->devep) && i == 1 && j == 8) {
|
|
set_iso_started(s, p->devep);
|
|
}
|
|
}
|
|
aurb[i].iso_frame_idx++;
|
|
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
|
i = (i + 1) % ISO_URB_COUNT;
|
|
set_iso_urb_idx(s, p->devep, i);
|
|
}
|
|
} else {
|
|
if (in) {
|
|
set_iso_started(s, p->devep);
|
|
} else {
|
|
DPRINTF("hubs: iso out error no free buffer, dropping packet\n");
|
|
}
|
|
}
|
|
|
|
if (is_iso_started(s, p->devep)) {
|
|
/* (Re)-submit all fully consumed / filled urbs */
|
|
for (i = 0; i < ISO_URB_COUNT; i++) {
|
|
if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, &aurb[i]);
|
|
if (ret < 0) {
|
|
printf("husb error submitting iso urb %d: %d\n", i, errno);
|
|
if (!in || len == 0) {
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
len = USB_RET_NAK;
|
|
break;
|
|
case EPIPE:
|
|
default:
|
|
len = USB_RET_STALL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
aurb[i].iso_frame_idx = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
struct usbdevfs_urb *urb;
|
|
AsyncURB *aurb;
|
|
int ret, rem;
|
|
uint8_t *pbuf;
|
|
uint8_t ep;
|
|
|
|
if (!is_valid(s, p->devep)) {
|
|
return USB_RET_NAK;
|
|
}
|
|
|
|
if (p->pid == USB_TOKEN_IN) {
|
|
ep = p->devep | 0x80;
|
|
} else {
|
|
ep = p->devep;
|
|
}
|
|
|
|
if (is_halted(s, p->devep)) {
|
|
ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &ep);
|
|
if (ret < 0) {
|
|
DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n",
|
|
ep, errno);
|
|
return USB_RET_NAK;
|
|
}
|
|
clear_halt(s, p->devep);
|
|
}
|
|
|
|
if (is_isoc(s, p->devep)) {
|
|
return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN);
|
|
}
|
|
|
|
rem = p->len;
|
|
pbuf = p->data;
|
|
p->len = 0;
|
|
while (rem) {
|
|
aurb = async_alloc(s);
|
|
aurb->packet = p;
|
|
|
|
urb = &aurb->urb;
|
|
urb->endpoint = ep;
|
|
urb->type = USBDEVFS_URB_TYPE_BULK;
|
|
urb->usercontext = s;
|
|
urb->buffer = pbuf;
|
|
|
|
if (rem > MAX_USBFS_BUFFER_SIZE) {
|
|
urb->buffer_length = MAX_USBFS_BUFFER_SIZE;
|
|
aurb->more = 1;
|
|
} else {
|
|
urb->buffer_length = rem;
|
|
aurb->more = 0;
|
|
}
|
|
pbuf += urb->buffer_length;
|
|
rem -= urb->buffer_length;
|
|
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
|
|
|
|
DPRINTF("husb: data submit: ep 0x%x, len %u, more %d, packet %p, aurb %p\n",
|
|
urb->endpoint, urb->buffer_length, aurb->more, p, aurb);
|
|
|
|
if (ret < 0) {
|
|
DPRINTF("husb: submit failed. errno %d\n", errno);
|
|
async_free(aurb);
|
|
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
return USB_RET_NAK;
|
|
case EPIPE:
|
|
default:
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return USB_RET_ASYNC;
|
|
}
|
|
|
|
static int ctrl_error(void)
|
|
{
|
|
if (errno == ETIMEDOUT) {
|
|
return USB_RET_NAK;
|
|
} else {
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
|
|
static int usb_host_set_address(USBHostDevice *s, int addr)
|
|
{
|
|
DPRINTF("husb: ctrl set addr %u\n", addr);
|
|
s->dev.addr = addr;
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_set_config(USBHostDevice *s, int config)
|
|
{
|
|
usb_host_release_interfaces(s);
|
|
|
|
int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
|
|
|
|
DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
|
|
|
|
if (ret < 0) {
|
|
return ctrl_error();
|
|
}
|
|
usb_host_claim_interfaces(s, config);
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
|
|
{
|
|
struct usbdevfs_setinterface si;
|
|
int i, ret;
|
|
|
|
for (i = 1; i <= MAX_ENDPOINTS; i++) {
|
|
if (is_isoc(s, i)) {
|
|
usb_host_stop_n_free_iso(s, i);
|
|
}
|
|
}
|
|
|
|
si.interface = iface;
|
|
si.altsetting = alt;
|
|
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
|
|
|
|
DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
|
|
iface, alt, ret, errno);
|
|
|
|
if (ret < 0) {
|
|
return ctrl_error();
|
|
}
|
|
usb_linux_update_endp_table(s);
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
|
|
int request, int value, int index, int length, uint8_t *data)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
struct usbdevfs_urb *urb;
|
|
AsyncURB *aurb;
|
|
int ret;
|
|
|
|
/*
|
|
* Process certain standard device requests.
|
|
* These are infrequent and are processed synchronously.
|
|
*/
|
|
|
|
/* Note request is (bRequestType << 8) | bRequest */
|
|
DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
|
|
request >> 8, request & 0xff, value, index, length);
|
|
|
|
switch (request) {
|
|
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
|
return usb_host_set_address(s, value);
|
|
|
|
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
|
return usb_host_set_config(s, value & 0xff);
|
|
|
|
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
|
return usb_host_set_interface(s, index, value);
|
|
}
|
|
|
|
/* The rest are asynchronous */
|
|
|
|
if (length > sizeof(dev->data_buf)) {
|
|
fprintf(stderr, "husb: ctrl buffer too small (%d > %zu)\n",
|
|
length, sizeof(dev->data_buf));
|
|
return USB_RET_STALL;
|
|
}
|
|
|
|
aurb = async_alloc(s);
|
|
aurb->packet = p;
|
|
|
|
/*
|
|
* Setup ctrl transfer.
|
|
*
|
|
* s->ctrl is laid out such that data buffer immediately follows
|
|
* 'req' struct which is exactly what usbdevfs expects.
|
|
*/
|
|
urb = &aurb->urb;
|
|
|
|
urb->type = USBDEVFS_URB_TYPE_CONTROL;
|
|
urb->endpoint = p->devep;
|
|
|
|
urb->buffer = &dev->setup_buf;
|
|
urb->buffer_length = length + 8;
|
|
|
|
urb->usercontext = s;
|
|
|
|
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
|
|
|
|
DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
|
|
|
|
if (ret < 0) {
|
|
DPRINTF("husb: submit failed. errno %d\n", errno);
|
|
async_free(aurb);
|
|
|
|
switch(errno) {
|
|
case ETIMEDOUT:
|
|
return USB_RET_NAK;
|
|
case EPIPE:
|
|
default:
|
|
return USB_RET_STALL;
|
|
}
|
|
}
|
|
|
|
return USB_RET_ASYNC;
|
|
}
|
|
|
|
static int usb_linux_get_configuration(USBHostDevice *s)
|
|
{
|
|
uint8_t configuration;
|
|
struct usb_ctrltransfer ct;
|
|
int ret;
|
|
|
|
if (usb_fs_type == USB_FS_SYS) {
|
|
char device_name[32], line[1024];
|
|
int configuration;
|
|
|
|
sprintf(device_name, "%d-%s", s->bus_num, s->port);
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "bConfigurationValue",
|
|
device_name)) {
|
|
goto usbdevfs;
|
|
}
|
|
if (sscanf(line, "%d", &configuration) != 1) {
|
|
goto usbdevfs;
|
|
}
|
|
return configuration;
|
|
}
|
|
|
|
usbdevfs:
|
|
ct.bRequestType = USB_DIR_IN;
|
|
ct.bRequest = USB_REQ_GET_CONFIGURATION;
|
|
ct.wValue = 0;
|
|
ct.wIndex = 0;
|
|
ct.wLength = 1;
|
|
ct.data = &configuration;
|
|
ct.timeout = 50;
|
|
|
|
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
|
|
if (ret < 0) {
|
|
perror("usb_linux_get_configuration");
|
|
return -1;
|
|
}
|
|
|
|
/* in address state */
|
|
if (configuration == 0) {
|
|
return -1;
|
|
}
|
|
|
|
return configuration;
|
|
}
|
|
|
|
static uint8_t usb_linux_get_alt_setting(USBHostDevice *s,
|
|
uint8_t configuration, uint8_t interface)
|
|
{
|
|
uint8_t alt_setting;
|
|
struct usb_ctrltransfer ct;
|
|
int ret;
|
|
|
|
if (usb_fs_type == USB_FS_SYS) {
|
|
char device_name[64], line[1024];
|
|
int alt_setting;
|
|
|
|
sprintf(device_name, "%d-%s:%d.%d", s->bus_num, s->port,
|
|
(int)configuration, (int)interface);
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "bAlternateSetting",
|
|
device_name)) {
|
|
goto usbdevfs;
|
|
}
|
|
if (sscanf(line, "%d", &alt_setting) != 1) {
|
|
goto usbdevfs;
|
|
}
|
|
return alt_setting;
|
|
}
|
|
|
|
usbdevfs:
|
|
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
|
|
ct.bRequest = USB_REQ_GET_INTERFACE;
|
|
ct.wValue = 0;
|
|
ct.wIndex = interface;
|
|
ct.wLength = 1;
|
|
ct.data = &alt_setting;
|
|
ct.timeout = 50;
|
|
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
|
|
if (ret < 0) {
|
|
/* Assume alt 0 on error */
|
|
return 0;
|
|
}
|
|
|
|
return alt_setting;
|
|
}
|
|
|
|
/* returns 1 on problem encountered or 0 for success */
|
|
static int usb_linux_update_endp_table(USBHostDevice *s)
|
|
{
|
|
uint8_t *descriptors;
|
|
uint8_t devep, type, configuration, alt_interface;
|
|
int interface, length, i;
|
|
|
|
for (i = 0; i < MAX_ENDPOINTS; i++)
|
|
s->endp_table[i].type = INVALID_EP_TYPE;
|
|
|
|
i = usb_linux_get_configuration(s);
|
|
if (i < 0)
|
|
return 1;
|
|
configuration = i;
|
|
|
|
/* get the desired configuration, interface, and endpoint descriptors
|
|
* from device description */
|
|
descriptors = &s->descr[18];
|
|
length = s->descr_len - 18;
|
|
i = 0;
|
|
|
|
if (descriptors[i + 1] != USB_DT_CONFIG ||
|
|
descriptors[i + 5] != configuration) {
|
|
DPRINTF("invalid descriptor data - configuration\n");
|
|
return 1;
|
|
}
|
|
i += descriptors[i];
|
|
|
|
while (i < length) {
|
|
if (descriptors[i + 1] != USB_DT_INTERFACE ||
|
|
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
|
descriptors[i + 4] == 0)) {
|
|
i += descriptors[i];
|
|
continue;
|
|
}
|
|
|
|
interface = descriptors[i + 2];
|
|
alt_interface = usb_linux_get_alt_setting(s, configuration, interface);
|
|
|
|
/* the current interface descriptor is the active interface
|
|
* and has endpoints */
|
|
if (descriptors[i + 3] != alt_interface) {
|
|
i += descriptors[i];
|
|
continue;
|
|
}
|
|
|
|
/* advance to the endpoints */
|
|
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) {
|
|
i += descriptors[i];
|
|
}
|
|
|
|
if (i >= length)
|
|
break;
|
|
|
|
while (i < length) {
|
|
if (descriptors[i + 1] != USB_DT_ENDPOINT) {
|
|
break;
|
|
}
|
|
|
|
devep = descriptors[i + 2];
|
|
switch (descriptors[i + 3] & 0x3) {
|
|
case 0x00:
|
|
type = USBDEVFS_URB_TYPE_CONTROL;
|
|
break;
|
|
case 0x01:
|
|
type = USBDEVFS_URB_TYPE_ISO;
|
|
set_max_packet_size(s, (devep & 0xf), descriptors + i);
|
|
break;
|
|
case 0x02:
|
|
type = USBDEVFS_URB_TYPE_BULK;
|
|
break;
|
|
case 0x03:
|
|
type = USBDEVFS_URB_TYPE_INTERRUPT;
|
|
break;
|
|
default:
|
|
DPRINTF("usb_host: malformed endpoint type\n");
|
|
type = USBDEVFS_URB_TYPE_BULK;
|
|
}
|
|
s->endp_table[(devep & 0xf) - 1].type = type;
|
|
s->endp_table[(devep & 0xf) - 1].halted = 0;
|
|
|
|
i += descriptors[i];
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int usb_host_open(USBHostDevice *dev, int bus_num,
|
|
int addr, char *port, const char *prod_name, int speed)
|
|
{
|
|
int fd = -1, ret;
|
|
char buf[1024];
|
|
|
|
if (dev->fd != -1) {
|
|
goto fail;
|
|
}
|
|
printf("husb: open device %d.%d\n", bus_num, addr);
|
|
|
|
if (!usb_host_device_path) {
|
|
perror("husb: USB Host Device Path not set");
|
|
goto fail;
|
|
}
|
|
snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
|
|
bus_num, addr);
|
|
fd = open(buf, O_RDWR | O_NONBLOCK);
|
|
if (fd < 0) {
|
|
perror(buf);
|
|
goto fail;
|
|
}
|
|
DPRINTF("husb: opened %s\n", buf);
|
|
|
|
dev->bus_num = bus_num;
|
|
dev->addr = addr;
|
|
strcpy(dev->port, port);
|
|
dev->fd = fd;
|
|
|
|
/* read the device description */
|
|
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
|
if (dev->descr_len <= 0) {
|
|
perror("husb: reading device data failed");
|
|
goto fail;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
{
|
|
int x;
|
|
printf("=== begin dumping device descriptor data ===\n");
|
|
for (x = 0; x < dev->descr_len; x++) {
|
|
printf("%02x ", dev->descr[x]);
|
|
}
|
|
printf("\n=== end dumping device descriptor data ===\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Initial configuration is -1 which makes us claim first
|
|
* available config. We used to start with 1, which does not
|
|
* always work. I've seen devices where first config starts
|
|
* with 2.
|
|
*/
|
|
if (!usb_host_claim_interfaces(dev, -1)) {
|
|
goto fail;
|
|
}
|
|
|
|
ret = usb_linux_update_endp_table(dev);
|
|
if (ret) {
|
|
goto fail;
|
|
}
|
|
|
|
if (speed == -1) {
|
|
struct usbdevfs_connectinfo ci;
|
|
|
|
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
|
|
if (ret < 0) {
|
|
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
|
goto fail;
|
|
}
|
|
|
|
if (ci.slow) {
|
|
speed = USB_SPEED_LOW;
|
|
} else {
|
|
speed = USB_SPEED_HIGH;
|
|
}
|
|
}
|
|
dev->dev.speed = speed;
|
|
|
|
printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
|
|
|
|
if (!prod_name || prod_name[0] == '\0') {
|
|
snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
|
"host:%d.%d", bus_num, addr);
|
|
} else {
|
|
pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
|
|
prod_name);
|
|
}
|
|
|
|
/* USB devio uses 'write' flag to check for async completions */
|
|
qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
|
|
|
|
usb_device_attach(&dev->dev);
|
|
return 0;
|
|
|
|
fail:
|
|
dev->fd = -1;
|
|
if (fd != -1) {
|
|
close(fd);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int usb_host_close(USBHostDevice *dev)
|
|
{
|
|
int i;
|
|
|
|
if (dev->fd == -1) {
|
|
return -1;
|
|
}
|
|
|
|
qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
|
|
dev->closing = 1;
|
|
for (i = 1; i <= MAX_ENDPOINTS; i++) {
|
|
if (is_isoc(dev, i)) {
|
|
usb_host_stop_n_free_iso(dev, i);
|
|
}
|
|
}
|
|
async_complete(dev);
|
|
dev->closing = 0;
|
|
usb_device_detach(&dev->dev);
|
|
ioctl(dev->fd, USBDEVFS_RESET);
|
|
close(dev->fd);
|
|
dev->fd = -1;
|
|
return 0;
|
|
}
|
|
|
|
static void usb_host_exit_notifier(struct Notifier* n)
|
|
{
|
|
USBHostDevice *s = container_of(n, USBHostDevice, exit);
|
|
|
|
if (s->fd != -1) {
|
|
ioctl(s->fd, USBDEVFS_RESET);
|
|
}
|
|
}
|
|
|
|
static int usb_host_initfn(USBDevice *dev)
|
|
{
|
|
USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
|
|
|
|
dev->auto_attach = 0;
|
|
s->fd = -1;
|
|
QTAILQ_INSERT_TAIL(&hostdevs, s, next);
|
|
s->exit.notify = usb_host_exit_notifier;
|
|
qemu_add_exit_notifier(&s->exit);
|
|
usb_host_auto_check(NULL);
|
|
return 0;
|
|
}
|
|
|
|
static struct USBDeviceInfo usb_host_dev_info = {
|
|
.product_desc = "USB Host Device",
|
|
.qdev.name = "usb-host",
|
|
.qdev.size = sizeof(USBHostDevice),
|
|
.init = usb_host_initfn,
|
|
.handle_packet = usb_generic_handle_packet,
|
|
.cancel_packet = usb_host_async_cancel,
|
|
.handle_data = usb_host_handle_data,
|
|
.handle_control = usb_host_handle_control,
|
|
.handle_reset = usb_host_handle_reset,
|
|
.handle_destroy = usb_host_handle_destroy,
|
|
.usbdevice_name = "host",
|
|
.usbdevice_init = usb_host_device_open,
|
|
.qdev.props = (Property[]) {
|
|
DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
|
|
DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
|
|
DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
|
|
DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
|
|
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
},
|
|
};
|
|
|
|
static void usb_host_register_devices(void)
|
|
{
|
|
usb_qdev_register(&usb_host_dev_info);
|
|
}
|
|
device_init(usb_host_register_devices)
|
|
|
|
USBDevice *usb_host_device_open(const char *devname)
|
|
{
|
|
struct USBAutoFilter filter;
|
|
USBDevice *dev;
|
|
char *p;
|
|
|
|
dev = usb_create(NULL /* FIXME */, "usb-host");
|
|
|
|
if (strstr(devname, "auto:")) {
|
|
if (parse_filter(devname, &filter) < 0) {
|
|
goto fail;
|
|
}
|
|
} else {
|
|
if ((p = strchr(devname, '.'))) {
|
|
filter.bus_num = strtoul(devname, NULL, 0);
|
|
filter.addr = strtoul(p + 1, NULL, 0);
|
|
filter.vendor_id = 0;
|
|
filter.product_id = 0;
|
|
} else if ((p = strchr(devname, ':'))) {
|
|
filter.bus_num = 0;
|
|
filter.addr = 0;
|
|
filter.vendor_id = strtoul(devname, NULL, 16);
|
|
filter.product_id = strtoul(p + 1, NULL, 16);
|
|
} else {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
|
|
qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
|
|
qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
|
|
qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
|
|
qdev_init_nofail(&dev->qdev);
|
|
return dev;
|
|
|
|
fail:
|
|
qdev_free(&dev->qdev);
|
|
return NULL;
|
|
}
|
|
|
|
int usb_host_device_close(const char *devname)
|
|
{
|
|
#if 0
|
|
char product_name[PRODUCT_NAME_SZ];
|
|
int bus_num, addr;
|
|
USBHostDevice *s;
|
|
|
|
if (strstr(devname, "auto:")) {
|
|
return usb_host_auto_del(devname);
|
|
}
|
|
if (usb_host_find_device(&bus_num, &addr, product_name,
|
|
sizeof(product_name), devname) < 0) {
|
|
return -1;
|
|
}
|
|
s = hostdev_find(bus_num, addr);
|
|
if (s) {
|
|
usb_device_delete_addr(s->bus_num, s->dev.addr);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int get_tag_value(char *buf, int buf_size,
|
|
const char *str, const char *tag,
|
|
const char *stopchars)
|
|
{
|
|
const char *p;
|
|
char *q;
|
|
p = strstr(str, tag);
|
|
if (!p) {
|
|
return -1;
|
|
}
|
|
p += strlen(tag);
|
|
while (qemu_isspace(*p)) {
|
|
p++;
|
|
}
|
|
q = buf;
|
|
while (*p != '\0' && !strchr(stopchars, *p)) {
|
|
if ((q - buf) < (buf_size - 1)) {
|
|
*q++ = *p;
|
|
}
|
|
p++;
|
|
}
|
|
*q = '\0';
|
|
return q - buf;
|
|
}
|
|
|
|
/*
|
|
* Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
|
|
* host's USB devices. This is legacy support since many distributions
|
|
* are moving to /sys/bus/usb
|
|
*/
|
|
static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
|
|
{
|
|
FILE *f = NULL;
|
|
char line[1024];
|
|
char buf[1024];
|
|
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
|
char product_name[512];
|
|
int ret = 0;
|
|
|
|
if (!usb_host_device_path) {
|
|
perror("husb: USB Host Device Path not set");
|
|
goto the_end;
|
|
}
|
|
snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
|
|
f = fopen(line, "r");
|
|
if (!f) {
|
|
perror("husb: cannot open devices file");
|
|
goto the_end;
|
|
}
|
|
|
|
device_count = 0;
|
|
bus_num = addr = class_id = product_id = vendor_id = 0;
|
|
speed = -1; /* Can't get the speed from /[proc|dev]/bus/usb/devices */
|
|
for(;;) {
|
|
if (fgets(line, sizeof(line), f) == NULL) {
|
|
break;
|
|
}
|
|
if (strlen(line) > 0) {
|
|
line[strlen(line) - 1] = '\0';
|
|
}
|
|
if (line[0] == 'T' && line[1] == ':') {
|
|
if (device_count && (vendor_id || product_id)) {
|
|
/* New device. Add the previously discovered device. */
|
|
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
|
|
product_id, product_name, speed);
|
|
if (ret) {
|
|
goto the_end;
|
|
}
|
|
}
|
|
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) {
|
|
goto fail;
|
|
}
|
|
bus_num = atoi(buf);
|
|
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) {
|
|
goto fail;
|
|
}
|
|
addr = atoi(buf);
|
|
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) {
|
|
goto fail;
|
|
}
|
|
if (!strcmp(buf, "5000")) {
|
|
speed = USB_SPEED_SUPER;
|
|
} else if (!strcmp(buf, "480")) {
|
|
speed = USB_SPEED_HIGH;
|
|
} else if (!strcmp(buf, "1.5")) {
|
|
speed = USB_SPEED_LOW;
|
|
} else {
|
|
speed = USB_SPEED_FULL;
|
|
}
|
|
product_name[0] = '\0';
|
|
class_id = 0xff;
|
|
device_count++;
|
|
product_id = 0;
|
|
vendor_id = 0;
|
|
} else if (line[0] == 'P' && line[1] == ':') {
|
|
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) {
|
|
goto fail;
|
|
}
|
|
vendor_id = strtoul(buf, NULL, 16);
|
|
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) {
|
|
goto fail;
|
|
}
|
|
product_id = strtoul(buf, NULL, 16);
|
|
} else if (line[0] == 'S' && line[1] == ':') {
|
|
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) {
|
|
goto fail;
|
|
}
|
|
pstrcpy(product_name, sizeof(product_name), buf);
|
|
} else if (line[0] == 'D' && line[1] == ':') {
|
|
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) {
|
|
goto fail;
|
|
}
|
|
class_id = strtoul(buf, NULL, 16);
|
|
}
|
|
fail: ;
|
|
}
|
|
if (device_count && (vendor_id || product_id)) {
|
|
/* Add the last device. */
|
|
ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
|
|
product_id, product_name, speed);
|
|
}
|
|
the_end:
|
|
if (f) {
|
|
fclose(f);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Read sys file-system device file
|
|
*
|
|
* @line address of buffer to put file contents in
|
|
* @line_size size of line
|
|
* @device_file path to device file (printf format string)
|
|
* @device_name device being opened (inserted into device_file)
|
|
*
|
|
* @return 0 failed, 1 succeeded ('line' contains data)
|
|
*/
|
|
static int usb_host_read_file(char *line, size_t line_size,
|
|
const char *device_file, const char *device_name)
|
|
{
|
|
FILE *f;
|
|
int ret = 0;
|
|
char filename[PATH_MAX];
|
|
|
|
snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
|
|
device_file);
|
|
f = fopen(filename, "r");
|
|
if (f) {
|
|
ret = fgets(line, line_size, f) != NULL;
|
|
fclose(f);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Use /sys/bus/usb/devices/ directory to determine host's USB
|
|
* devices.
|
|
*
|
|
* This code is based on Robert Schiele's original patches posted to
|
|
* the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
|
|
*/
|
|
static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
|
|
{
|
|
DIR *dir = NULL;
|
|
char line[1024];
|
|
int bus_num, addr, speed, class_id, product_id, vendor_id;
|
|
int ret = 0;
|
|
char port[MAX_PORTLEN];
|
|
char product_name[512];
|
|
struct dirent *de;
|
|
|
|
dir = opendir(USBSYSBUS_PATH "/devices");
|
|
if (!dir) {
|
|
perror("husb: cannot open devices directory");
|
|
goto the_end;
|
|
}
|
|
|
|
while ((de = readdir(dir))) {
|
|
if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
|
|
if (sscanf(de->d_name, "%d-%7[0-9.]", &bus_num, port) < 2) {
|
|
continue;
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%d", &addr) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &class_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "idVendor",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &vendor_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "idProduct",
|
|
de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (sscanf(line, "%x", &product_id) != 1) {
|
|
goto the_end;
|
|
}
|
|
if (!usb_host_read_file(line, sizeof(line), "product",
|
|
de->d_name)) {
|
|
*product_name = 0;
|
|
} else {
|
|
if (strlen(line) > 0) {
|
|
line[strlen(line) - 1] = '\0';
|
|
}
|
|
pstrcpy(product_name, sizeof(product_name), line);
|
|
}
|
|
|
|
if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) {
|
|
goto the_end;
|
|
}
|
|
if (!strcmp(line, "5000\n")) {
|
|
speed = USB_SPEED_SUPER;
|
|
} else if (!strcmp(line, "480\n")) {
|
|
speed = USB_SPEED_HIGH;
|
|
} else if (!strcmp(line, "1.5\n")) {
|
|
speed = USB_SPEED_LOW;
|
|
} else {
|
|
speed = USB_SPEED_FULL;
|
|
}
|
|
|
|
ret = func(opaque, bus_num, addr, port, class_id, vendor_id,
|
|
product_id, product_name, speed);
|
|
if (ret) {
|
|
goto the_end;
|
|
}
|
|
}
|
|
}
|
|
the_end:
|
|
if (dir) {
|
|
closedir(dir);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Determine how to access the host's USB devices and call the
|
|
* specific support function.
|
|
*/
|
|
static int usb_host_scan(void *opaque, USBScanFunc *func)
|
|
{
|
|
Monitor *mon = cur_mon;
|
|
FILE *f = NULL;
|
|
DIR *dir = NULL;
|
|
int ret = 0;
|
|
const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
|
|
char devpath[PATH_MAX];
|
|
|
|
/* only check the host once */
|
|
if (!usb_fs_type) {
|
|
dir = opendir(USBSYSBUS_PATH "/devices");
|
|
if (dir) {
|
|
/* devices found in /dev/bus/usb/ (yes - not a mistake!) */
|
|
strcpy(devpath, USBDEVBUS_PATH);
|
|
usb_fs_type = USB_FS_SYS;
|
|
closedir(dir);
|
|
DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH);
|
|
goto found_devices;
|
|
}
|
|
f = fopen(USBPROCBUS_PATH "/devices", "r");
|
|
if (f) {
|
|
/* devices found in /proc/bus/usb/ */
|
|
strcpy(devpath, USBPROCBUS_PATH);
|
|
usb_fs_type = USB_FS_PROC;
|
|
fclose(f);
|
|
DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH);
|
|
goto found_devices;
|
|
}
|
|
/* try additional methods if an access method hasn't been found yet */
|
|
f = fopen(USBDEVBUS_PATH "/devices", "r");
|
|
if (f) {
|
|
/* devices found in /dev/bus/usb/ */
|
|
strcpy(devpath, USBDEVBUS_PATH);
|
|
usb_fs_type = USB_FS_DEV;
|
|
fclose(f);
|
|
DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH);
|
|
goto found_devices;
|
|
}
|
|
found_devices:
|
|
if (!usb_fs_type) {
|
|
if (mon) {
|
|
monitor_printf(mon, "husb: unable to access USB devices\n");
|
|
}
|
|
return -ENOENT;
|
|
}
|
|
|
|
/* the module setting (used later for opening devices) */
|
|
usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
|
|
strcpy(usb_host_device_path, devpath);
|
|
if (mon) {
|
|
monitor_printf(mon, "husb: using %s file-system with %s\n",
|
|
fs_type[usb_fs_type], usb_host_device_path);
|
|
}
|
|
}
|
|
|
|
switch (usb_fs_type) {
|
|
case USB_FS_PROC:
|
|
case USB_FS_DEV:
|
|
ret = usb_host_scan_dev(opaque, func);
|
|
break;
|
|
case USB_FS_SYS:
|
|
ret = usb_host_scan_sys(opaque, func);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static QEMUTimer *usb_auto_timer;
|
|
|
|
static int usb_host_auto_scan(void *opaque, int bus_num, int addr, char *port,
|
|
int class_id, int vendor_id, int product_id,
|
|
const char *product_name, int speed)
|
|
{
|
|
struct USBAutoFilter *f;
|
|
struct USBHostDevice *s;
|
|
|
|
/* Ignore hubs */
|
|
if (class_id == 9)
|
|
return 0;
|
|
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
f = &s->match;
|
|
|
|
if (f->bus_num > 0 && f->bus_num != bus_num) {
|
|
continue;
|
|
}
|
|
if (f->addr > 0 && f->addr != addr) {
|
|
continue;
|
|
}
|
|
if (f->port != NULL && (port == NULL || strcmp(f->port, port) != 0)) {
|
|
continue;
|
|
}
|
|
|
|
if (f->vendor_id > 0 && f->vendor_id != vendor_id) {
|
|
continue;
|
|
}
|
|
|
|
if (f->product_id > 0 && f->product_id != product_id) {
|
|
continue;
|
|
}
|
|
/* We got a match */
|
|
|
|
/* Already attached ? */
|
|
if (s->fd != -1) {
|
|
return 0;
|
|
}
|
|
DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
|
|
|
|
usb_host_open(s, bus_num, addr, port, product_name, speed);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void usb_host_auto_check(void *unused)
|
|
{
|
|
struct USBHostDevice *s;
|
|
int unconnected = 0;
|
|
|
|
usb_host_scan(NULL, usb_host_auto_scan);
|
|
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
if (s->fd == -1) {
|
|
unconnected++;
|
|
}
|
|
}
|
|
|
|
if (unconnected == 0) {
|
|
/* nothing to watch */
|
|
if (usb_auto_timer) {
|
|
qemu_del_timer(usb_auto_timer);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!usb_auto_timer) {
|
|
usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL);
|
|
if (!usb_auto_timer) {
|
|
return;
|
|
}
|
|
}
|
|
qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000);
|
|
}
|
|
|
|
/*
|
|
* Autoconnect filter
|
|
* Format:
|
|
* auto:bus:dev[:vid:pid]
|
|
* auto:bus.dev[:vid:pid]
|
|
*
|
|
* bus - bus number (dec, * means any)
|
|
* dev - device number (dec, * means any)
|
|
* vid - vendor id (hex, * means any)
|
|
* pid - product id (hex, * means any)
|
|
*
|
|
* See 'lsusb' output.
|
|
*/
|
|
static int parse_filter(const char *spec, struct USBAutoFilter *f)
|
|
{
|
|
enum { BUS, DEV, VID, PID, DONE };
|
|
const char *p = spec;
|
|
int i;
|
|
|
|
f->bus_num = 0;
|
|
f->addr = 0;
|
|
f->vendor_id = 0;
|
|
f->product_id = 0;
|
|
|
|
for (i = BUS; i < DONE; i++) {
|
|
p = strpbrk(p, ":.");
|
|
if (!p) {
|
|
break;
|
|
}
|
|
p++;
|
|
|
|
if (*p == '*') {
|
|
continue;
|
|
}
|
|
switch(i) {
|
|
case BUS: f->bus_num = strtol(p, NULL, 10); break;
|
|
case DEV: f->addr = strtol(p, NULL, 10); break;
|
|
case VID: f->vendor_id = strtol(p, NULL, 16); break;
|
|
case PID: f->product_id = strtol(p, NULL, 16); break;
|
|
}
|
|
}
|
|
|
|
if (i < DEV) {
|
|
fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**********************/
|
|
/* USB host device info */
|
|
|
|
struct usb_class_info {
|
|
int class;
|
|
const char *class_name;
|
|
};
|
|
|
|
static const struct usb_class_info usb_class_info[] = {
|
|
{ USB_CLASS_AUDIO, "Audio"},
|
|
{ USB_CLASS_COMM, "Communication"},
|
|
{ USB_CLASS_HID, "HID"},
|
|
{ USB_CLASS_HUB, "Hub" },
|
|
{ USB_CLASS_PHYSICAL, "Physical" },
|
|
{ USB_CLASS_PRINTER, "Printer" },
|
|
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
|
{ USB_CLASS_CDC_DATA, "Data" },
|
|
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
|
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
|
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
|
{ USB_CLASS_CSCID, "Smart Card" },
|
|
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
|
{ -1, NULL }
|
|
};
|
|
|
|
static const char *usb_class_str(uint8_t class)
|
|
{
|
|
const struct usb_class_info *p;
|
|
for(p = usb_class_info; p->class != -1; p++) {
|
|
if (p->class == class) {
|
|
break;
|
|
}
|
|
}
|
|
return p->class_name;
|
|
}
|
|
|
|
static void usb_info_device(Monitor *mon, int bus_num, int addr, char *port,
|
|
int class_id, int vendor_id, int product_id,
|
|
const char *product_name,
|
|
int speed)
|
|
{
|
|
const char *class_str, *speed_str;
|
|
|
|
switch(speed) {
|
|
case USB_SPEED_LOW:
|
|
speed_str = "1.5";
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
speed_str = "12";
|
|
break;
|
|
case USB_SPEED_HIGH:
|
|
speed_str = "480";
|
|
break;
|
|
case USB_SPEED_SUPER:
|
|
speed_str = "5000";
|
|
break;
|
|
default:
|
|
speed_str = "?";
|
|
break;
|
|
}
|
|
|
|
monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
|
|
bus_num, addr, port, speed_str);
|
|
class_str = usb_class_str(class_id);
|
|
if (class_str) {
|
|
monitor_printf(mon, " %s:", class_str);
|
|
} else {
|
|
monitor_printf(mon, " Class %02x:", class_id);
|
|
}
|
|
monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
|
|
if (product_name[0] != '\0') {
|
|
monitor_printf(mon, ", %s", product_name);
|
|
}
|
|
monitor_printf(mon, "\n");
|
|
}
|
|
|
|
static int usb_host_info_device(void *opaque, int bus_num, int addr,
|
|
char *path, int class_id,
|
|
int vendor_id, int product_id,
|
|
const char *product_name,
|
|
int speed)
|
|
{
|
|
Monitor *mon = opaque;
|
|
|
|
usb_info_device(mon, bus_num, addr, path, class_id, vendor_id, product_id,
|
|
product_name, speed);
|
|
return 0;
|
|
}
|
|
|
|
static void dec2str(int val, char *str, size_t size)
|
|
{
|
|
if (val == 0) {
|
|
snprintf(str, size, "*");
|
|
} else {
|
|
snprintf(str, size, "%d", val);
|
|
}
|
|
}
|
|
|
|
static void hex2str(int val, char *str, size_t size)
|
|
{
|
|
if (val == 0) {
|
|
snprintf(str, size, "*");
|
|
} else {
|
|
snprintf(str, size, "%04x", val);
|
|
}
|
|
}
|
|
|
|
void usb_host_info(Monitor *mon)
|
|
{
|
|
struct USBAutoFilter *f;
|
|
struct USBHostDevice *s;
|
|
|
|
usb_host_scan(mon, usb_host_info_device);
|
|
|
|
if (QTAILQ_EMPTY(&hostdevs)) {
|
|
return;
|
|
}
|
|
|
|
monitor_printf(mon, " Auto filters:\n");
|
|
QTAILQ_FOREACH(s, &hostdevs, next) {
|
|
char bus[10], addr[10], vid[10], pid[10];
|
|
f = &s->match;
|
|
dec2str(f->bus_num, bus, sizeof(bus));
|
|
dec2str(f->addr, addr, sizeof(addr));
|
|
hex2str(f->vendor_id, vid, sizeof(vid));
|
|
hex2str(f->product_id, pid, sizeof(pid));
|
|
monitor_printf(mon, " Bus %s, Addr %s, Port %s, ID %s:%s\n",
|
|
bus, addr, f->port ? f->port : "*", vid, pid);
|
|
}
|
|
}
|